Door stop



FIG. 1 is a perspective view of the front, left, top aspect of the door stop according to the ornamental design;

FIG. 2 is a perspective view of the rear, right, top aspect of the door stop;

FIG. 3 is a front view of the door stop;

FIG. 4 is a rear view of the door stop;

FIG. 5 is a right side view of the door stop, with the left side of the door stop being the same as the right side view of FIG. 5, but reversed;

FIG. 6 is a top view of the door stop; and,

FIG. 7 is a bottom view of the door stop.

The broken lines in the drawings illustrate portions of a door stop which form no part of the claimed design. 

CLAIM The ornamental design for a door stop, as shown and described. 